Gesellschaet



2 April 28, 1931.

A. RADERMACHER PRINTING MECHANISM FOR CASH REGISTERS Filed Sept. 28,1929 2 Sheets-Sheet l April 28, 1931.

A. RADERMACHER PRINTING MECHANISM FOR CASH REGISTERS Filed Sept. 28,1929 2 Sheets-Sheet 2 Fatented Apr. 28, 1931 AUGUST RADERTEACHER, OFESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP 'AKTIEN- GESELLSCI-IAFT,.OFESSEN -O1\T-THE-RUHR, GEBIvIANY PRINTING MECHANISM FOR CASH REGISTERSApplication filed September 28, 1929, Serial No. 395,914, and in GermanyOctober 8, 1928.

The present invention relates to printing mechanism for cash registersand similar machines, and more particularly to mechanism of that kindfor printing the set of calculated amount several times in succession.

According tothe invention an arrangement is provided which has amanually operated special drive for the platen, besides the drivingmeans operated by the machine drive, this special driving meansproviding the possibility of printing the amount for which the typecarriers are set, independent of the machine drive.

The appended drawing shows an embodiment of the invention. 7

Fig.1 being a side view of the special driving and locking means of thedevice, and

Fig. 2 being a side view of the special drive and of the platenarrangement.

Referring now to Fig. 2, aplaten 1 is guided by means of pins 2 in fixedslots 3 and hinged by bolt 4 to a frame 5, 5, 30, journaled upon a fixedshaft 6,and positive- 1 ly connected. by means of a compression spring14 with a lever 8 also journaled upon shaft 6. Lever 8' has. anattachment 8 with a face 7, and frame 5, 5, 30 has an arm 10,

face 7 abutting with arm 10. Lever 8 00- operates over roller .12 andunder the-influence of spring 11 fastened to attachment 8, with a camdisk 13 fast on driving shaft 31.. Lever 8 furthermore engages by meansof pin 23 a slot 22 of a thrust bar 25 hinged to a locking lever 18which'is journaled on a fixed bar 32,. said locking lever abutting withits free end upon anotch 29 of a shaft 20 and normally preventing bymeans :of a,

by the lifted arm 8 and is then again brought back into the lockedposition by spring 11. Slot 22 permits the printing motion of theplaten. This arrangement permits the printing of three impressionsduring one operation of the machine, by means of the machine drive whichactuates shaft 31.

The special driving means mentione above consists in a hand lever 33'journaled upon shaft 6, said lever being normally kept in contact withstop 34 of the machine frame, due to its own weight. Hand lever 33 isrigidly connected with an arm 36 by means ofa sleeve 35, said armextending under an arm 37 attached to lever 8, lever 8 being thereforenot prevented from being rocked by cam disk 13. If hand lever 33 ismoved to the right, it will carry along lever 8 by means of arm 36 anddisengage platen 1 in the'same manner in which this function isperformed by means of one of the cams 15. In this manner the printingoperation can be repeated any desirable number of times after thecompletion of the normal operation of the machine which actuates shaft31 and cams 15.

Referring now to Fig. 1, the complete rocking of the hand lever issecured.- by means of a stroke-completion lock of well known design,which consists of ratchet segment 39 arranged on an arm 38 and a catch42 secured in a medium position by spring In order to lockhand lever 33during the normal operation of the machine, itis equipped with a lockingpin 43 (See Fig.

l) which cooperates with the hook-shaped extension 44 of a slide'47moving upon a shaft31 of the driving mechanism of the machine, having afixed stud 45, and being under the influence of aspring 46. Hook 44normally engages pin 43 and thereby locks hand lever 33 in its'positionof rest. At the end of an operation of the machine, however, cam 48 of adisk 49 fast on shaft 31 comes into contact with a roller 51 of slide 47and moves the latter towards the left, "contrary to the action of spring46, thereby releasing hand lever 33. Slide 47 is kept in its releasingposition by a catch 52 which under the influence of spring 53, arrests aface 54- of slide 47 thereby'preventing it from being pulled back byspring e6. At the end of the forward motion of hand lever 33, in aclockwise direction, a laterally extending pin 55 of the lever depressesthe free end of catch 52 and moves the other end out of its lockingcontact with 5%, so that slide Q'Tmoves back into its initial positionand engages locking pin 43 if hand lever 33 returns, thereby againlocking the hand lever in its initial position. This results in tilefact that the described locking means on the one hand locks hand lever33 against performance of the repeated printing operation, prior to, andduring one normal'operation of the machine and'prevents on the. otherhand that more than one repeating impression is made subsequent to onenormal operation of the machine. This however does not prevent theperformance of a new operation of the machine, prior to a repeatingimpression.-

In order to protect the repeating printing with the hand lever,subsequent to an operation of the machine, a locking means is providedfor the releasing device of the machine. This locking means becomesoperative with the normal operation of the machine and can only be madeinoperative by operating hand lever 33. r

The release of the machine drive is accomplished in conventional mannerby depressing one of several releasekeys 56 1), whereby a lockingsegment 57 is rocked upwardly, and a releasing lever 61' is disengaged,said releasing lever being under the influence of a spring 59,thereby'releasi'ng a locking arm 62 of the main drive shaft 63. At theend of the operation of the machine releasing lever 61 is returned intoits initial position and key 56 which has so far been retained indepressed position, is disengaged, so that'it can return into itsposition of rest, under the influence of its spring.

The release keys 56 cooperate furthermore with a key slide 65 havinginclined faces 64:, said key slide being imparted an upward motion bymeans of the respective key-pin 66 if a release key is depressed; Themotion of 65 is transmitted to a locking arm journaled upon shaft 32,over bell crank 67,

- 68, rod 69 and bell crank 71, 72, said locking arm 74 being also underthe influence of a spring 73'tendmg torotate it counterclockwise. Ifslide 65 is moved upward by pin 66 of key 56, the free end 7 5 oflocking arm 74 is moved toward trap pivoted on shaft 20 and influencedby spring 76, so that 75 becomes engaged by catch'TTof trap 70 and is soprevent-ed from turning back again. Trap 70 is prevented from moving inthis position by apin mounted nsoaoar on the machine frame. In thismanner the levers connected with locking arm 74, including the key slide56 are retained in the position imparted to them by depressing key 56.

Angular pieces'79 are journaled upon key bar 65 by means of studs 78,said pieces abutting with their arms 82, under the influence of springs81, with the adjacent studs 78, locking "faces 33 being in thisposition. in t-l e path of key pins 66, provided :that key bar 65 is inits lifted position;

After a release key 56 has been depressed, the other release keys aretherefore locked by locking faces 83, the depressed key how ever isreleased at the end of the normal operation of the machine-andpassesduring its return motion with its pin 66 over-the corresponding inclinedface of piece 83'so that it is also locked by face 83, afterythecompletion of the normal operation ofthe machine. Therefore, a newnormal operation of the machine cannot be accomplished as long as thekey bar 65 is not ret rned from its lifted position.

In order to return key bar 65, trap 70 is provided with a cam 84:" whichextends'into the path of a cam 8510f handlever 33. As soon as lever ismoved, after the completion of a-normal operation of'the machine, to theright, in order to obtain a repeated impression, cam 85 and cam 84: turnthe trap '70'so far in a counter-clockwise-direction, that face 77releases locking arm 74-, said locking arm returning into its initialposition together with parts '67, 68, 69, 71 and 72- andkey slide-65,under the influence of spring 7 3. Only after the completion of therepeating impression, this completion being enforced due to the presenceof locks 39 and 42, is it possible 'to perform a subsequent newoperation of the machine.

i laving thus described ;my invention,

l. Ina printingdevice for cash'registers and calculating machines, type.carriers, a platen'for printing from said type carriers, means foractuatingsaid' platen from the drive of the machine during normaloperation of the machine," manually operated special means for printingfrom said type carriers by actuating said platen independ ent ofsaiddrive, and a means-for lockingsaid special means during the normaloperation of the machine.

21111 a printing device: for cash registers and calculating machines,type carriers, a platen for printing from said type carriers, means foractuating saidplaten from the drive of the machine during normaloperation" of the machine, manually operated special means for printingfrom said type carriersby'actuating said platen independent of saiddrive, and a means for locking said special means during theno'rm-aloperation of the machine and for releasing it again at the endof the normal operation.

8. In a printing device for cash registers and calculating machines,type carriers, a platen for printing from said type carriers, means foractuating said platen from the drive of the machine during normaloperation of the machine, manually operated special means for printingfrom said type carriers by actuating said platen independent of saiddrive, a means for locking said special means during the normaloperation of the machine and for releasing it again at the end of thenormal operation, for a subsequent repeating printing operation, andmeans for automatically looking it again at the end of the printingoperation, in order to allow only one operation of said special meanssubsequent to a normal operation.

4;. In a printing device for cash registers and calculating machines,type carriers, a platen for printing from said type carriers, means foractuating said platen from the drive of the machine during normaloperation, a cam disk actuated by said machine drive, a manuallyoperated special means having a locking pin and a laterally extendingpin for printing from said typecarriers by actuating said platen independently of said normal drive, a slide having a hook-shaped extension,a catch cooperating with said slide and with said laterally-extendingpin, said hook-shaped extension normally locking said special means byengaging said locking pin, said cam disk moving said extension from itslocking position at the end of the normal operation of the machinethereby releasing said locking pin, said catch retaining said slide inits locking position until'said special means is operated and saidlaterally-extending pin, actuating said catch, releases said slide, andthe hook-shaped extension of said slide reengaging said locking pin ofsaid special means, upon the return of said special means into itsinitial position.

5. In a printing device for cash registers and calculating machines,type carriers, a platen for printing from said type carriers, means foractuating said-platen from the drive of said machine during the normaloperation, av manually operated special means for printing from saidtype carriers by actuating said platen independent of said normal drive,manually controlled means for initiating the operation of sai'd'normalactuating means, locking means cooperating with said manually controlledmeans, said locking means preventing a subsequent normal operation untila repeating printing operation has been performed with said specialmeans.

6. In a printing device for cash registers and calculating machines,type carriers, a

platen for printing from said type carriers, means for actuating. saidplaten from the drive of. said machine during the normal operation, amanually operated special means having a cam for printing from said typecarriers by actuating said platen independent of said normal drive,means for initiating operation of said normal actuating means, a lockingarm positively connected with said initiating means, a trapengaging saidlocking arm if said initiating means are actuated,said trap beingreleased by said cam if said special means is actuated.

7. In a printing device for cash registers and calculating machines,type carriers, a platen for printing from said type carriers, means foractuating said platen fromthe drive of said machine during the normaloperation, a manually operated special means for printing from said typecarriers by actuating said platen independent of said normal drive,manually controlled means for initiating the operation of said normalactuating means, locking means cooperating with said manually controlledmeans, said locking means preventing a subsequent normal operation untila repeating printing operation has been performed with said.

special means, a slide actuatedtogether with said manually controlledmeans and locking said manually-controlled means in the operativeposition, and means for locking said slide in its operative position,thereby preventing a subsequent operation of said manually controlledmeans until a repeating printing operation is performed with saidspecial means. 7

8. In a printing device for cash registers and calculating machines,type carriers, a,

platen for printing from said type carriers, means for actuating saidplaten from the drive of the machine during normal opera tion of themachine, a manually operated special means for printing from said typecarriers by actuating said platen independent of said drive, releasekeys having laterally extending pins, for initiating operation of saidnormal drive, a key slide having inclined faces cooperating with saidpins and being actuated by said pins if a key is depressed, means forloclnng said key slide in its actuated position until a repeatingprinting operation is performed with said special means, angular piecesrotatably connected to said key slide, said angular pieces locking theinoperativerelease keys if said key slide is actuated, and locking theactuated key after its release, said key slide arresting in its lockedposition all the release keys in their normal position at the end of thenormal operation of the machine.

9. In a printing device for cash registers and calculating machines,type carriers, a

platen for printing from said type carriers, means for actuating saidplaten from the drive of the machine during normal operation ofthemachine, manually operated special means for printing from saidtypecarriers by actuating said platen'independent of said drive, asecond actuating means for said platen, said second means being actuatedby said special means,-and comprising a spring prepared for action, andsubsequently releasedby the operation of said special 1 means, therebyactuating the platen, and a' stroke-completion lock securing completeactuation of said special means.

The foregoing specification signed this 13th day'of September, 1929.

AUGUST RADERMACHER.

